<template>
  <view :style="{ backgroundColor: backgroundColor, padding: padding }" class="tui-searchbar__box">
    <slot></slot>
    <view :style="{height: height}" class="tui-search-bar__form">
      <view v-if="showInput"
            :class="{'tui-searchbar__blur':!isFocus && !searchState && showLabel && !disabled}"
            :style="{ height: height, borderRadius: radius, backgroundColor: inputBgColor }"
            class="tui-search-bar__box">
        <icon :size="searchSize" class="tui-icon-search" type="search"></icon>
        <input :disabled="disabled" :focus="isFocus" :placeholder="placeholder" :value="valueTxt"
               class="tui-search-bar__input" confirm-type="search" type="text" @blur="inputBlur" @confirm="search"
               @focus="inputFocus" @input="inputChange"/>
        <icon v-if="valueTxt.length > 0 && !disabled" :size="clearSize" class="tui-icon-clear" type="clear"
              @tap.stop="clearInput"></icon>
      </view>
      <view v-if="!isFocus && !searchState && showLabel"
            :style="{height: height, borderRadius: radius, backgroundColor: inputBgColor }"
            class="tui-search-bar__label" @tap="tapShowInput">
        <icon :size="searchSize" class="tui-icon-search" type="search"></icon>
        <text class="tui-search-bar__text">{{ placeholder }}</text>
      </view>
    </view>
    <view v-if="cancel && searchState && !valueTxt" :style="{ color: cancelColor }"
          class="tui-search-bar__cancel-btn" @tap="hideInput">{{ cancelText }}
    </view>
    <view v-if="valueTxt && !disabled && searchState" :style="{ color: getSearchColor }"
          class="tui-search-bar__cancel-btn" @tap="search">{{ searchText }}
    </view>
  </view>
</template>

<script>
//默认高度52px
export default {
  name: 'tuiSearchbar',
  emits: ['clear', 'focus', 'blur', 'click', 'cancel', 'input', 'search'],
  props: {
    //搜索栏背景色
    backgroundColor: {
      type: String,
      default: '#ededed'
    },
    //搜索栏padding
    padding: {
      type: String,
      default: '16rpx 20rpx'
    },
    //input框高度
    height: {
      type: String,
      default: '72rpx'
    },
    radius: {
      type: String,
      default: '8rpx'
    },
    //input框背景色
    inputBgColor: {
      type: String,
      default: '#fff'
    },
    focus: {
      type: Boolean,
      default: false
    },
    placeholder: {
      type: String,
      default: '请输入搜索关键词'
    },
    value: {
      type: String,
      default: ''
    },
    //input是否禁用
    disabled: {
      type: Boolean,
      default: false
    },
    cancelText: {
      type: String,
      default: '取消'
    },
    cancelColor: {
      type: String,
      default: '#888'
    },
    cancel: {
      type: Boolean,
      default: true
    },
    searchText: {
      type: String,
      default: '搜索'
    },
    searchColor: {
      type: String,
      default: ''
    },
    //是否显示占位标签
    showLabel: {
      type: Boolean,
      default: true
    },
    //是否显示输入框
    showInput: {
      type: Boolean,
      default: true
    }
  },
  computed: {
    getSearchColor() {
      return this.searchColor || (uni && uni.$tui && uni.$tui.color.primary) || '#5677fc'
    }
  },
  created() {
    this.valueTxt = this.value;
    this.isFocus = this.focus;
    if (this.focus || this.valueTxt.length > 0) {
      this.searchState = true;
    }
    this.clearSize = Math.ceil(uni.upx2px(30))
    this.searchSize = Math.ceil(uni.upx2px(26))
  },
  watch: {
    value(val) {
      this.valueTxt = val;
    }
  },
  data() {
    return {
      searchState: false,
      isFocus: false,
      valueTxt: '',
      clearSize: 15,
      searchSize: 13
    };
  },
  methods: {
    clearInput() {
      this.valueTxt = '';
      // #ifdef MP-TOUTIAO || MP-WEIXIN
      this.isFocus = false;
      uni.hideKeyboard()
      // #endif
      // #ifndef MP-TOUTIAO || MP-WEIXIN
      this.isFocus = true;
      // #endif
      this.$emit('clear');
    },
    inputFocus(e) {
      if (!this.showLabel) {
        this.searchState = true
      } else {
        // #ifdef H5 || MP-ALIPAY
        this.tapShowInput();
        // #endif
      }
      this.$emit('focus', e.detail);
    },
    inputBlur(e) {
      this.isFocus = false;
      this.$emit('blur', e.detail);
    },
    tapShowInput() {
      if (!this.disabled && this.showInput) {
        this.searchState = true;
        setTimeout(() => {
          this.isFocus = true;
        }, 20)
      }
      this.$emit('click', {});
    },

    hideInput() {
      this.searchState = false;
      this.isFocus = false;
      uni.hideKeyboard()
      this.$emit('cancel', {});
    },
    inputChange(e) {
      this.valueTxt = e.detail.value;
      this.$emit('input', e.detail);
    },
    search() {
      this.$emit('search', {
        value: this.valueTxt
      });
    },
    reset() {
      this.searchState = false;
      this.isFocus = false;
      this.valueTxt = '';
      uni.hideKeyboard()
    }
  }
};
</script>

<style scoped>
.tui-searchbar__box {
  width: 100%;
  position: relative;
  display: flex;
  align-items: center;
  box-sizing: border-box;
}

.tui-search-bar__form {
  position: relative;
  -webkit-box-flex: 1;
  -webkit-flex: auto;
  flex: auto;
}

.tui-search-bar__box {
  width: 100%;
  padding-left: 20rpx;
  padding-right: 16rpx;
  box-sizing: border-box;
  z-index: 1;
  display: flex;
  align-items: center;
  /* #ifdef H5 */
  opacity: 1;
  /* #endif */
}

/* #ifdef H5 || MP-ALIPAY */
.tui-searchbar__blur {
  position: relative;
  opacity: 0;
  z-index: 3;
}

/* #endif */

.tui-search-bar__box .tui-search-bar__input {
  padding: 0 16rpx;
  width: 100%;
  border: 0;
  font-size: 28rpx;
  box-sizing: content-box;
  background: transparent;
}

.tui-search-bar__box .tui-search-bar__input:focus {
  outline: none;
}

.tui-search-bar__box .tui-icon-search {
  flex-shrink: 0;
}

.tui-search-bar__box .tui-icon-clear {
  margin-left: 4rpx;
  flex-shrink: 0;
}

.tui-search-bar__label {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  font-size: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  /* #ifdef H5 */
  cursor: pointer;
  /* #endif */
}

.tui-search-bar__cancel-btn {
  font-size: 30rpx;
  margin-left: 16rpx;
  line-height: 56rpx;
  white-space: nowrap;
  flex-shrink: 0;
}

.tui-search-bar__text {
  display: inline-block;
  font-size: 28rpx;
  vertical-align: middle;
  padding-left: 12rpx;
  color: rgba(0, 0, 0, 0.5);
}
</style>
